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===Cautions with using Live USB devices===
 
===Cautions with using Live USB devices===
 
* Wait for delayed writes to the USB device to finish (up to 15 seconds) before pulling it out of the system. If writes do not complete, you will corrupt the USB device file system and it will not boot.
 
* Wait for delayed writes to the USB device to finish (up to 15 seconds) before pulling it out of the system. If writes do not complete, you will corrupt the USB device file system and it will not boot.
*If you do a yum update on a small USB device, you can overload the persistent overlay. [http://fedorahosted.org/liveusb-creator/ticket/28]"Fedora 10 adds the 'reset_overlay' option that you can pass on the kernel command line which helps to recover." See [[Category_talk:Live_USB]], [[LiveOS image]], & [[Talk:Downloads]] for more discussion of storage economics.
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* If you do a yum update on a small USB device, you can overload the persistent overlay. [http://fedorahosted.org/liveusb-creator/ticket/28]"Fedora 10 adds the 'reset_overlay' option that you can pass on the kernel command line which helps to recover." See [[LiveOS image]], [[Talk:Downloads]], & [[Talk:{{PAGENAME}}|this page]] for more discussion of storage economics.
 
* Use a larger device (4 GB or even 8 GB), if you plan to do updates or install new programs.
 
* Use a larger device (4 GB or even 8 GB), if you plan to do updates or install new programs.
 
* If you use a 1-GB device, do not (i) install large updates or activities or (ii) download large files.  The 300-MB overlay will quickly fill up (e.g., within an hour), and your device will become corrupted (i.e., unbootable) without any warning.  You may use the [[Sugar on a Stick/Sugar Clone|Sugar Cellar]] utility to monitor the usage of the persistent overlay. Also, check your Journal free space frequently.
 
* If you use a 1-GB device, do not (i) install large updates or activities or (ii) download large files.  The 300-MB overlay will quickly fill up (e.g., within an hour), and your device will become corrupted (i.e., unbootable) without any warning.  You may use the [[Sugar on a Stick/Sugar Clone|Sugar Cellar]] utility to monitor the usage of the persistent overlay. Also, check your Journal free space frequently.
*Use zyx-liveinstaller [http://wiki.sugalabs.org/go/Sugar_on_a_Stick/ZyX-LiveInstaller ] for soas-v2-Blueberry or '''liveinst''' command for Fedora based installs in a terminal to make a non-live installation. It will require about 2x as large device as the file structure will not be compressed. These non-live installs are more robust in use but may have a shorter service lifetime (See [[olpc:How to Damage a FLASH Storage Device]].)
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* Use zyx-liveinstaller [[Sugar_on_a_Stick/ZyX-LiveInstaller]] for soas-v2-Blueberry or '''liveinst''' command for Fedora based installs in a terminal to make a non-live installation. It will require about 2x as large device as the file structure will not be compressed. These non-live installs are more robust in use but may have a shorter service lifetime (See [[olpc:How to Damage a FLASH Storage Device]].)
 
* Fedora 13-based SoaS-Mirabelle will not install with either livinst (Crashes with bug) or zyx-liveinstaller (no longer present on .iso) Hint: use: livecd-iso-to-disk or liveusb-creator to create the device.
 
* Fedora 13-based SoaS-Mirabelle will not install with either livinst (Crashes with bug) or zyx-liveinstaller (no longer present on .iso) Hint: use: livecd-iso-to-disk or liveusb-creator to create the device.
 
* notes on ext3 / ext4 file systems:[http://lwn.net/Articles/322823/] (It looks like ext3 formatting may be more robust.)
 
* notes on ext3 / ext4 file systems:[http://lwn.net/Articles/322823/] (It looks like ext3 formatting may be more robust.)